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80f94f29f6
Provide a function to check how much space there is. This also flips the state on the cache and will signal the daemon to inform it of the change and to ask it to do some culling if necessary. We will also need to subtract the amount of data currently being written to the cache (cache->b_writing) from the amount of available space to avoid hitting ENOSPC accidentally. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819629322.215744.13457425294680841213.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906930100.143852.1681026700865762069.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967140058.1823006.7781243664702837128.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021539957.640689.12477177372616805706.stgit@warthog.procyon.org.uk/ # v4
15 lines
259 B
Makefile
15 lines
259 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for caching in a mounted filesystem
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#
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cachefiles-y := \
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cache.o \
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daemon.o \
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main.o \
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security.o
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cachefiles-$(CONFIG_CACHEFILES_ERROR_INJECTION) += error_inject.o
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obj-$(CONFIG_CACHEFILES) := cachefiles.o
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